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2CDS381103R0505 ABB S301P-B50NA Miniature Circuit Breaker – 1+NP – B – 50 A
ABB 2CDS381103R0505 S301P-B50NA miniature circuit breaker featuring a 50 A rating, Type B tripping characteristic, 1P+N configuration and 25 kA breaking capacity for industrial electrical protection.
£49.10
Why Choose the ABB 2CDS381103R0505 S301P-B50NA Miniature Circuit Breaker?
The ABB 2CDS381103R0505, also known as the S301P-B50NA, is a premium miniature circuit breaker (MCB) from the renowned ABB System pro M Compact S300P series. Designed for industrial and commercial electrical installations, it provides dependable protection against overloads and short circuits whilst delivering excellent long-term reliability for high-capacity electrical circuits.
Manufactured to international IEC and UL standards, the S301P-B50NA combines ABB's proven engineering with a compact DIN rail-mounted design. Integrated trip indication, fail-safe screw terminals and compatibility with ABB System pro M Compact accessories ensure straightforward installation, maintenance and future system expansion.
With a 50 A rated current, a Type B tripping characteristic, a 1P+N configuration and a 25 kA ultimate breaking capacity, the ABB 2CDS381103R0505 is ideally suited to protecting resistive loads, distribution circuits and commercial electrical installations where fast fault disconnection is required.
Key Advantages
- Industrial miniature circuit breaker for overload and short-circuit protection.
- 50 A rated current suitable for high-capacity commercial and industrial circuits.
- Type B tripping characteristic provides rapid protection for resistive loads.
- 1P+N configuration disconnects both phase and neutral conductors.
- 25 kA breaking capacity for demanding industrial installations.
- Compact DIN rail mounting with ABB fail-safe terminal technology.
Key Features
- ABB System pro M Compact S300P series.
- S301P-B50NA model.
- 50 A rated current.
- Type B tripping characteristic.
- 1 protected pole plus switched neutral (1P+N).
- 240 V AC operating voltage.
- 72 V DC operating voltage.
- 25 kA ultimate short-circuit breaking capacity.
- DIN rail mounting with integrated trip indication and screw terminals.
Reliable Protection for General-Purpose Electrical Circuits
Miniature circuit breakers automatically disconnect electrical circuits whenever overload or short-circuit conditions occur. The Type B tripping characteristic is designed for circuits with low inrush currents, making it ideal for resistive loads such as lighting, heating systems and general-purpose power distribution where rapid fault disconnection is essential.
The ABB S300P range offers outstanding interruption performance, long service life and worldwide approvals, making it a preferred choice for industrial automation, commercial electrical installations, OEM equipment and electrical distribution systems.
Typical Applications
- Commercial electrical distribution.
- Lighting installations.
- Heating circuits.
- Industrial control panels.
- General-purpose power circuits.
- OEM machinery.
- Commercial buildings.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 50 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole + N | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 25 kA | |
| Manufacturer | ABB | |
| Series | System pro M Compact S300P | |
| Model | 2CDS381103R0505 | |
| Extended product type | S301P-B50NA | |
| Product type | Miniature circuit breaker (MCB) | |
| EAN | 4016779079273 | |
| Rated current | 50 A | |
| Tripping characteristic | Type B | |
| Number of poles | 1P+N | |
| Protected poles | 1 | |
| Rated voltage | 240 V AC | |
| Maximum operating voltage | 480Y / 277 V AC | |
| Rated DC voltage | 72 V DC | |
| Rated insulation voltage | 500 V | |
| Rated impulse withstand voltage | 6 kV | |
| Ultimate breaking capacity (Icu) | 25 kA | |
| Rated breaking capacity (Icn) | 15 kA (IEC/EN 60898-1) | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP20 (IP40 when installed in a suitable enclosure) | |
| Mounting type | DIN rail | |
| Terminal type | Screw terminals | |
| Dimensions (H × W × D) | approx. 88 × 35 × 69 mm | |
| Weight | approx. 0.248 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB 2CDS381103R0505 used for?
It protects commercial and industrial electrical circuits against overloads and short circuits, particularly resistive loads such as lighting, heating systems and general-purpose distribution circuits.
What is the current rating of this circuit breaker?
The ABB 2CDS381103R0505 has a 50 A rated current.
What does the Type B tripping characteristic provide?
Type B circuit breakers provide rapid magnetic tripping at relatively low fault current levels, making them ideal for resistive loads and circuits with low inrush currents.
What does the 1P+N configuration mean?
The breaker protects the phase conductor while simultaneously switching the neutral conductor to improve circuit isolation during maintenance and fault conditions.
How is the breaker installed?
The device is designed for quick installation onto a standard DIN rail using secure screw terminal connections.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact S300P miniature circuit breakers are trusted worldwide by electrical engineers, OEM manufacturers and panel builders for dependable protection, high interruption capacity and long-term reliability across commercial and industrial electrical installations.
